Ninety-five people were treated at Sutter Solano Medical Center, Kaiser Permanente Vallejo Medical Center, both in Vallejo, the NorthBay Medical Center in Fairfield and Queen of the Valley Medical Center in Napa, Culverwell said. Twenty ambulances and two buses transported the patients.

Seven people initially went to Sutter Solano and others arrived by ambulances, fire trucks and a bus, Neilson said.

The hospital implemented its incident command system. Patients began arriving between 1:30 and 2 p.m.

Kaiser Permanente Vallejo Medical Center treated some 30 people for headaches, nausea and respiratory issues, spokeswoman Deniene Erickson said. All were expected to be released.

Sixteen people went to the NorthBay Medical Center and eight to Queen of the Valley Medical Center, Culverwell said.

Ghiringhelli Specialty Foods makes private-label fresh and frozen food, including salads, wraps, burritos and pizza in its 50,000 square-foot plant for retail outlets, according to the company’s website.

(Copyright 2012 by CBS San Francisco and Bay City News Service. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.)

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